Gravitational Sensitivity of Solutions Melts at the Crystallization of Two-Phase InSb InBi Alloys under Space Conditions

Physics – Condensed Matter – Materials Science

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Scientific paper

Analyzing the results of space and ground-based experiments carried out in the Baikov Institute of Metallurgy and Materials Science to study the processes of the melting and crystallization of two-phase InSb InBi alloys of an indium antimony bismuth (In Sb Bi) triple system, we have demonstrated the gravitational sensitivity of the InSb-based solution melt. It manifests itself as a certain asymmetry of the boundary of the dissolution of the InSb ingot by the InSb InBi melt and heterogeneity of the melt along this boundary depending on the magnitude and direction of the gravity force acceleration gin the range (1 10 3 10 5) g 0, where g 0is the acceleration of the gravity force on Earth. For the first time, it is established in the experiments under analysis that the homogeneity of melts of a complex composition with components of various densities can be reached only at magnitudes of quasistationary (residual) microaccelerations g< 10 6 g 0.

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